Smoke (Su)

In battle, a cauchemar exhales smoke that chokes and blinds foes,
filling a 15-foot cone each round as a free action. Anyone in the cone
must succeed on a DC 22 Fortitude save or become sickened until 1d6
minutes after leaving the area. This smoke acts as obscuring mist for the purposes of concealment. The smoke persists for 1 round. The save DC is Constitution-based.

ECOLOGY

Environment any (Abaddon)Organization solitaryTreasure none

The cauchemar is a more dangerous
variant of the nightmare, particularly valued for its ability to enter
the Ethereal Plane with its rider in addition to being able to use plane shift to invade other realities.